Spinning artificial silk



Oct. 18, 1932. o. FAUST SPINNING ARTIFICIAL SILK Filed March 1, 1928 Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE OTTO FAUST, OF MANNHEIM'-NEUOSTHEIM, GERMANY SPINNING ARTIFICIAL SILK Application filed March 1, 1928, Serial No. 258,433, and in Germany March 4, 1927.

This invention relates to a process and an apparatus for spinning artificial silk and more particularly to a thread guide for carrying outthe new process.

In order to enhance the strength of the silk thread it has already been proposed (U. S. Patents Nos. 808,148 and 808,149) to allow the thread before it passes on to the receiving device to run over two or more (German Pat- 30 ent No. 390,139) glass rods while suffering a more or less sharp bending and a stretching. The thread is then to be run on to the rotating receiving device. In this mode of working, however, attention has never been paid to the completely uniform distribution of the strain of the draft over all the length of the threads, because it has not been recognized that by such un-uniform strain the dyeing capacity of the product is irregularly affected.

According to my invention a constant strain suited to the production of a thread with even qualities may be produced by bending the thread between the spinning nozzle and the collecting device at a suitable angle in a thread guide suspended by means of a spring; in such a manner that when there is excessive strain on the thread the thread guide gives way in consequence of its spring n suspension so that the angle of the bend is correspondingly changed. The eye of the thread guide may be suspended by an elastic band or by a helical spring which is preferably made of a material which is not attacked M by the liquid of the precipitating bath (for instance acid-resisting steel as sold by the firm of Krupp).

The eye of the thread guide must in general be so guided that it gives way as above described to the various drafts exerted. In

* general, however, in consequence of its guide it cannot be brought in a lateral direction from its position, so that the correct uniform winding on the receiving device is not endangered.

The invention is illustrated in the accompanying drawing, wherein Fig. l is a vertical plan View of the thread guide;

Fig. 2 is a vertical section on line A-B of 7 Fig. 1, and

Fig. 3 is a top planview.

In the drawing a designates the eye of the thread guide through which the thread passes on its way from the spinning nozzle to the collecting device. The eye a is attached on the transverse piece I) which is connected with two tubular elements 0 and 0 The elements 0 and 0 are guided by the frame-work (5 thus preventing lateral displacement of the thread guide. it is a pad which prevents the tubular element 0 from sliding off the frame piece d. The bar f serves as a means for attaching the frame 7 d on the spinning machine. The transverse piece I) carrying the eye a is suspended from the frame 0? by means of spring g. In this manner the eye a of the thread guide is guided so that, as above indicated, it moves in response to variations in the strain 7 of the thread passing through it and thus the angle at which the thread is bent in the thread guide is altered; it is, however, so guided that it can move only in the plane of the bent thread.

What I claim is:

' 1. In an apparatus for spining viscose silk in operative combination, a thread guide arranged between the spinning nozzle and the receiving device, said thread guide being suspended by elastic means and giving way only. in one plane. so

2. In an apparatus for spinning viscose silk in operative combination, a thread guide arranged between the spinning nozzle and the receiving device, said thread guide being suspended by a helical spring of acid-resisting metal and being guided in a rigid frame.

In testimony whereof, I aflix my signature.

OTTO FAUST. 

